Posts: 825
Threads: 113
Joined: Aug 2012
City: The Villages
State, Province, Country: Florida
I just got a GE radio with a ballast tube. I've never seen one(or heard of one) and was wondering how to test it.
I did some reading about it but couldn't find a test procedure. Any ideas?
Thanks,
Eric
The Villages, FL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org
Posts: 1,106
Threads: 88
Joined: Jun 2011
City: Tacoma
State, Province, Country: Washington
What's the number of the ballast?
Posts: 825
Threads: 113
Joined: Aug 2012
City: The Villages
State, Province, Country: Florida
It's a BL42B
Eric
The Villages, FL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org
Posts: 15,527
Threads: 545
Joined: Oct 2011
City: Jackson, NJ
Eric
You simply measure resistance between the pins where the resistors inside the tube are connected to.
It is that simple.
Posts: 1,106
Threads: 88
Joined: Jun 2011
City: Tacoma
State, Province, Country: Washington
These ballasts are available from several sources for about $12. Looking at the schematic, I see that pin 3 to pin 7 should show continuity. Pin 7 to pin 8 is the dial lamp connection. To check both sections check from pin 3 to pin 8, then from pin 8 to pin 7
Posts: 825
Threads: 113
Joined: Aug 2012
City: The Villages
State, Province, Country: Florida
Thanks, B A, I'll check it out.
Eric
The Villages, FL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org
Posts: 825
Threads: 113
Joined: Aug 2012
City: The Villages
State, Province, Country: Florida
Well, you were right. No continuity at all. I opened it up just to see what it looked like and found broken wires inside. Has anyone put resistors inside the metal tube instead of replacing it?
Eric
The Villages, FL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org
Posts: 825
Threads: 113
Joined: Aug 2012
City: The Villages
State, Province, Country: Florida
B A, where did you see them advertised?
Eric
The Villages, FL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org
Posts: 1,106
Threads: 88
Joined: Jun 2011
City: Tacoma
State, Province, Country: Washington
Posts: 825
Threads: 113
Joined: Aug 2012
City: The Villages
State, Province, Country: Florida
Thank you. It will be ordered tomorrow.
Eric
The Villages, FL
Member: Philco Phorum, ARF, ARCI & Radiomuseum.org
Users browsing this thread: 1 Guest(s)
|
|
Recent Posts
|
|
Correct model 84 Ac plug an cord type
|
| I remember a bakelite "lampshade" (a fancy lampshade) style plug being available in the hardware store when I ...MrFixr55 — 10:39 AM |
|
Correct model 84 Ac plug an cord type
|
| Hello Arran
Yes, I also like the lampshade style plug !
Sincerely Richardradiorich — 08:46 AM |
|
Restoring Philco 38-14
|
| Hello morzh,
Nice explanation on the x and y capacitors and glad you are narrowing down the issue with this set !
Si...radiorich — 08:43 AM |
|
Correct model 84 Ac plug an cord type
|
| From what I read Philco went to using brown rubber power cords in 1936, so cloth was used in the 1935 and earlier models...Arran — 11:25 PM |
|
Correct model 84 Ac plug an cord type
|
| Hi Bruce,
I have not worked on an 84, but in general, power cords for almost any radio prior to 1938 was cloth covered...MrFixr55 — 08:34 PM |
|
Restoring Philco 38-14
|
| OK, well, so after staring at the sch again, I realized the problem had to be the #12/12A padder.
I put a scope on the o...morzh — 08:15 PM |
|
Correct model 84 Ac plug an cord type
|
| Hello Bruce,
I mostly use brown far as my cloth powercords go !
Here is the plug that I have used bakelite Acorn style...radiorich — 08:05 PM |
|
Correct model 84 Ac plug an cord type
|
| Looking for as correct as can find the right Ac plug an the correct colored cloth line. Ive seen many old photos but mos...Bruce — 04:13 PM |
|
Restoring Philco 38-14
|
| Rod
Two Y-caps make sense if you use them from L/N to the chassis; this is only makes sense in the transformer radios w...morzh — 10:11 AM |
|
Restoring Philco 38-14
|
| Mike, I'm curious about a specific use of he Y cap. Lately I've seen a single cap across the power transformer primary. ...RodB — 09:01 AM |
|
Who's Online
|
There are currently 4494 online users. [Complete List]
» 1 Member(s) | 4493 Guest(s)
|
|
|
|
 
|
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
